Hormuz Traffic Falls to Seven Vessels as Kuwait and Qatar Drive Oil Flow Recovery
Oil throughput has climbed toward 10 million barrels a day as Gulf spot cargoes return, even as the visible vessel count fell sharply on Thursday (2026-08-27).
Only seven commodity vessels crossed the Strait of Hormuz on Thursday (2026-08-27), falling below the waterway's ten-day average, according to preliminary Kpler data cited by Reuters on Friday (2026-08-28). The tally was a fraction of normal commercial activity before the U.S.-Iran conflict began.7
Oil is nevertheless moving at a far higher rate than the vessel count suggests. Vortexa data published Monday (2026-08-24) put the seven-day average of flows through the strait close to 10 million barrels a day — a sharp rebound from the roughly 4 million barrels a day recorded in mid-July, according to traders quoted by Rigzone.6
Kuwait and Qatar are driving much of that recovery. The two Gulf producers together exported around 2 million barrels a day before the conflict. They have since rebuilt to approximately 70% of those levels, traders told Rigzone on Thursday (2026-08-27). Success in getting oil through Hormuz has allowed at least one of the pair to offer cargoes on the spot market, traders said, with Qatar's volumes largely carried by the commercial fleet.6
Bloomberg reported Friday (2026-08-28) that oil was exiting the chokepoint at between 6 and 8 million barrels daily, citing unnamed trader estimates. A separate group of traders quoted by Rigzone put the figure at 7 to 8 million barrels a day. The spread between those estimates and Vortexa's 10 million barrel average reflects the difficulty of tracking a waterway where AIS data has become an unreliable guide to actual throughput.7,6
Before the conflict, roughly 20% of the world's oil and LNG moved through Hormuz — equivalent to 15 to 16 million barrels a day. Even at 10 million barrels a day, the strait remains well short of that baseline. The gap between visible traffic and reported flows is covered primarily by vessels running without broadcasting their position.5,1
Vortexa data from May showed 65.2% of outbound laden tankers transiting dark. JPMorgan estimated clandestine flows at around 2.1 million barrels a day in the final two weeks of May. Piper Sandler analyst Jan Stuart put the figure higher, at about 2.9 million barrels a day for the same period, including approximately 900,000 barrels of ghost transits. "The ghosts, or clandestine flows, help," Stuart said, as quoted by CNN.1
By late July, the partial return of physical supply had begun to weigh on prices. Brent crude fell $1.03, or 1.2%, to $88.00 a barrel on Friday (2026-07-24) as improving Hormuz shipments combined with an OPEC+ production increase — the alliance approved 188,000 additional barrels a day — offset fears of further supply disruption. ICE Brent front-month settled at $88.29 a barrel on 2026-08-28, near where the late-July sell-off found its footing.4
Both Brent and WTI had gained around 20% through July as supply anxiety ran ahead of the physical data. Analysts noted that geopolitical events tend to produce temporary price spikes rather than sustained moves unless supply is directly and durably cut. The current recovery in Hormuz throughput has so far kept that pattern intact.4
The June comparison shows how much has shifted. Gulf oil exports exceeded 10 million barrels a day that month with U.S. military activity helping to keep the strait open, Reuters reported. Still, JPMorgan estimated visible commercial traffic through Hormuz had fallen to roughly 15% of pre-war levels at around that time.3,1
The rebound since is substantial. But the seven-vessel count on Thursday (2026-08-27) against a significantly higher recent average is a reminder of how precarious the picture remains. Kuwait and Qatar recovering to 70% of pre-war export volumes still leaves a combined shortfall of around 600,000 barrels a day from those two producers alone, before accounting for the larger disruptions affecting other Gulf states.6,7
After vessel attacks over the weekend of June 27-28 (2026-06-27 to 2026-06-28), some shipping companies reduced their AIS broadcasts and pulled back from established routes, Rigzone reported. Sustained throughput above 7 million barrels a day depends on that not repeating at scale. Any incident that drives commercial operators back to dark-only transit — or halts Kuwait and Qatar's spot cargo pipeline — would unwind weeks of recovery before ICE Brent front-month prices begin to reflect the physical loss.2,1,6